[sql] Remove SQLite 3.10.2 reference directory.

third_party/sqlite/sqlite-src-3100200/test/lock_common.tcl

-# 2010 April 14
-#
-# The author disclaims copyright to this source code.  In place of
-# a legal notice, here is a blessing:
-#
-#    May you do good and not evil.
-#    May you find forgiveness for yourself and forgive others.
-#    May you share freely, never taking more than you give.
-#
-#***********************************************************************
-# This file contains code used by several different test scripts. The
-# code in this file allows testfixture to control another process (or
-# processes) to test locking.
-#
-
-proc do_multiclient_test {varname script} {
-
-  foreach code [list {
-    if {[info exists ::G(valgrind)]} { db close ; continue }
-    set ::code2_chan [launch_testfixture]
-    set ::code3_chan [launch_testfixture]
-    proc code2 {tcl} { testfixture $::code2_chan $tcl }
-    proc code3 {tcl} { testfixture $::code3_chan $tcl }
-    set tn 1
-  } {
-    proc code2 {tcl} { uplevel #0 $tcl }
-    proc code3 {tcl} { uplevel #0 $tcl }
-    set tn 2
-  }] {
-    faultsim_delete_and_reopen
-
-    proc code1 {tcl} { uplevel #0 $tcl }
-  
-    # Open connections [db2] and [db3]. Depending on which iteration this
-    # is, the connections may be created in this interpreter, or in 
-    # interpreters running in other OS processes. As such, the [db2] and [db3]
-    # commands should only be accessed within [code2] and [code3] blocks,
-    # respectively.
-    #
-    eval $code
-    code2 { sqlite3 db2 test.db }
-    code3 { sqlite3 db3 test.db }
-    
-    # Shorthand commands. Execute SQL using database connection [db2] or 
-    # [db3]. Return the results.
-    #
-    proc sql1 {sql} { db eval $sql }
-    proc sql2 {sql} { code2 [list db2 eval $sql] }
-    proc sql3 {sql} { code3 [list db3 eval $sql] }
-  
-    proc csql1 {sql} { list [catch { sql1 $sql } msg] $msg }
-    proc csql2 {sql} { list [catch { sql2 $sql } msg] $msg }
-    proc csql3 {sql} { list [catch { sql3 $sql } msg] $msg }
-
-    uplevel set $varname $tn
-    uplevel $script
-
-    catch { code2 { db2 close } }
-    catch { code3 { db3 close } }
-    catch { close $::code2_chan }
-    catch { close $::code3_chan }
-    catch { db close }
-  }
-}
-
-# Launch another testfixture process to be controlled by this one. A
-# channel name is returned that may be passed as the first argument to proc
-# 'testfixture' to execute a command. The child testfixture process is shut
-# down by closing the channel.
-proc launch_testfixture {{prg ""}} {
-  write_main_loop
-  if {$prg eq ""} { set prg [info nameofexec] }
-  if {$prg eq ""} { set prg testfixture }
-  if {[file tail $prg]==$prg} { set prg [file join . $prg] }
-  set chan [open "|$prg tf_main.tcl" r+]
-  fconfigure $chan -buffering line
-  set rc [catch { 
-    testfixture $chan "sqlite3_test_control_pending_byte $::sqlite_pending_byte"
-  }]
-  if {$rc} {
-    testfixture $chan "set ::sqlite_pending_byte $::sqlite_pending_byte"
-  }
-  return $chan
-}
-
-# Execute a command in a child testfixture process, connected by two-way
-# channel $chan. Return the result of the command, or an error message.
-#
-proc testfixture {chan cmd args} {
-
-  if {[llength $args] == 0} {
-    fconfigure $chan -blocking 1
-    puts $chan $cmd
-    puts $chan OVER
-
-    set r ""
-    while { 1 } {
-      set line [gets $chan]
-      if { $line == "OVER" } { 
-        set res [lindex $r 1]
-        if { [lindex $r 0] } { error $res }
-        return $res
-      }
-      if {[eof $chan]} {
-        return "ERROR: Child process hung up"
-      }
-      append r $line
-    }
-    return $r
-  } else {
-    set ::tfnb($chan) ""
-    fconfigure $chan -blocking 0 -buffering none
-    puts $chan $cmd
-    puts $chan OVER
-    fileevent $chan readable [list testfixture_script_cb $chan [lindex $args 0]]
-    return ""
-  }
-}
-
-proc testfixture_script_cb {chan script} {
-  if {[eof $chan]} {
-    append ::tfnb($chan) "ERROR: Child process hung up"
-    set line "OVER"
-  } else {
-    set line [gets $chan]
-  }
-
-  if { $line == "OVER" } {
-    uplevel #0 $script [list [lindex $::tfnb($chan) 1]]
-    unset ::tfnb($chan)
-    fileevent $chan readable ""
-  } else {
-    append ::tfnb($chan) $line
-  }
-}
-
-proc testfixture_nb_cb {varname chan} {
-  if {[eof $chan]} {
-    append ::tfnb($chan) "ERROR: Child process hung up"
-    set line "OVER"
-  } else {
-    set line [gets $chan]
-  }
-
-  if { $line == "OVER" } {
-    set $varname [lindex $::tfnb($chan) 1]
-    unset ::tfnb($chan)
-    close $chan
-  } else {
-    append ::tfnb($chan) $line
-  }
-}
-
-proc testfixture_nb {varname cmd} {
-  set chan [launch_testfixture]
-  set ::tfnb($chan) ""
-  fconfigure $chan -blocking 0 -buffering none
-  puts $chan $cmd
-  puts $chan OVER
-  fileevent $chan readable [list testfixture_nb_cb $varname $chan]
-  return ""
-}
-
-# Write the main loop for the child testfixture processes into file
-# tf_main.tcl. The parent (this script) interacts with the child processes
-# via a two way pipe. The parent writes a script to the stdin of the child
-# process, followed by the word "OVER" on a line of its own. The child
-# process evaluates the script and writes the results to stdout, followed
-# by an "OVER" of its own.
-#
-set main_loop_written 0
-proc write_main_loop {} {
-  if {$::main_loop_written} return
-  set wrapper ""
-  if {[sqlite3 -has-codec] && [info exists ::do_not_use_codec]==0} {
-    set wrapper "
-      rename sqlite3 sqlite_orig
-      proc sqlite3 {args} {[info body sqlite3]}
-    "
-  }
-
-  set fd [open tf_main.tcl w]
-  puts $fd [string map [list %WRAPPER% $wrapper] {
-    %WRAPPER%
-    set script ""
-    while {![eof stdin]} {
-      flush stdout
-      set line [gets stdin]
-      if { $line == "OVER" } {
-        set rc [catch {eval $script} result]
-        puts [list $rc $result]
-        puts OVER
-        flush stdout
-        set script ""
-      } else {
-        append script $line
-        append script "\n"
-      }
-    }
-  }]
-  close $fd
-  set main_loop_written 1
-}
-